Resorboropsis

Resorboropsis is a genus of fungi within the family Tricholomataceae. It was first described by mycologist Rolf Singer in 1951. The genus is characterized by its resupinate (upside-down) growth form, where the fruiting bodies grow on the underside of dead wood or other substrates. Resorboropsis species are typically small, with caps ranging from 1 to 5 centimeters in diameter. The caps are convex to flattened, and the gills are free, meaning they are not attached to the stem. The stem is usually short and central, and the spores are smooth and ellipsoid. The genus is known for its distinctive, often colorful, spore prints. Resorboropsis species are found in various habitats, including temperate and tropical forests, and are often associated with decaying wood. They are not considered edible and are generally of little economic importance. The genus includes several species, with the most well-known being Resorboropsis paludosa, which is found in North America.